Edelbrock’s Performer carburetor features two-piece, all-aluminum construction. The carb uses easily changed metering rods for precise tuning. The primary venturi booster is a bottom feed design for smoother acceleration and better drivability. Although made for other Edelbrock products, the Performer Carb will perform well with other brand manifolds and cams. All Performer Carbs are square flange

How Edelbrock 4-Barrel Carburetors Give You Outstanding Street Performance...
Carburetors have to perform several different jobs, including controlling the float level, atomizing the fuel into a usable air/fuel mixture in the proper proportions, and transition smoothly between circuits. Each of these variables and more has an influence on how the engine performs. Your engine relies on the carburetor to perform impeccably under any condition, and any aspect out of adjustment affects the operation of the entire engine. A precisely tuned, quality-built carburetor should be able to handle the rigors of daily driving while delivering consistent, outstanding street performance day in and day out. Edelbrock carburetors are up to the task. Every Edelbrock carburetor is manufactured by Magneti Marelli Powertrain USA Inc. and has been specifically designed and tuned by Edelbrock engineers to provide the widest overall torque range. For unmatched street performance, combine them with Edelbrock Performer, Performer Air-Gap, Performer EPS, Performer RPM, RPM Air-Gap or Torker II manifold and camshaft combinations, as well as most stock and other aftermarket manifolds of similar design.